In order of the degree of wind erosion now occurring on their surfaces, Earth, Venus, Mars, Moon, and Mercury are the planets.
What distinguishes the surface is Mercury from that of the Moon?The MESSENGER mission discovered that Mercury has several distinctive landforms, more level plains, and surface chemistry that are unlike those that have been observed on the Moon (low in iron and rich in sulfur).
The planet Mercury is it the windiest?With wind speeds as high as 1600 kilometers an hour, significantly higher than those seen in Jupiter's atmosphere, Saturn also the "windiest" planet. Major components of Saturn include hydrogen and helium.
To know more about planets visit:
https://brainly.com/question/15268075
#SPJ4
an escalator in a shopping center is designed to move 97 people, 71kg each, at a constant speed of 0.4m/s at 30 degree slope. determine the minimum power input needed (in kw) to drive this escalator.
The minimum power input needed to drive the escalator in a shopping center is designed to move 97 people, 71kg each, at a constant speed of 0.4m/s at 30 degree slope = 1,377.4 W
The power of something can be calculated by dividing the amount of work it has completed by the amount of time it took to complete that task. This is the general concept of power; the formula might vary in different situations.
P = E/t is the equation .
Where P stands for power
E for energy,
And t for time in seconds.
According to this equation, power is the amount of energy consumed per unit of time.
Hence, the minimum power needed by the escalator:
P = E/t
= (mg) (v sin 30⁰)
= (97 x 71) (0.4 x ½)
= 1,377.4 W
Learn more about power here: https://brainly.com/question/30506205
#SPJ4
From where on Earth could you observe all of the stars during the course of a year?
It is not possible to observe all of the stars during a year from a single location on Earth. This is because the Earth rotates on its axis and orbits the Sun, causing the positions of the stars to change relative to an observer on the surface.
What fraction of the sky can be seen from the North Pole?From the North Pole, an observer can see approximately half of the sky. This is because the North Pole is located at the axis of rotation of the Earth, and therefore the observer can see half of the sky in all directions.
Can we see stars at the North Pole?Yes, you can see stars at the North Pole, but the availability of stars to be seen depends on the time of year. During the summer months, the North Pole experiences 24 hours of daylight and the Sun never sets, so the stars are not visible.
To know more about stars, visit here:
https://brainly.com/question/24493066
#SPJ4
on aircraft carriers, catapults are used to accelerate jet aircraft to flight speeds in a short distance. one such catapult takes a 18,500-kg jet from 0 to 69 m/s in 2.9 s. (assume the catapult acts in the positive horizontal direction. indicate the direction with the sign of your answer where appropriate.)
Far does the jet go while accelerating = 95.2m and force catapult have to exert on jet is 4.42*105 N.
How far does the jet go while accelerating?(measured in metres)
Use the formula xf = xi + v0*t+(1/2)*a*t2 The initial velocity and location are both zero! xf = 0+0+(1/2) xf = (1/2)*(68 m/s - 0 m/s)*(1/2.8s)*(2.8s)2 = 95.2 m
How much force does the catapult have to exert on the jet?
(N) Because F = m*a and Force = mass*acceleration, F = (18,200 kg)*(68 m/s - 0 m/s)*(1/2.8s) = 4.42*105 N.
To know more about force visit:
https://brainly.com/question/13191643
#SPJ4
a ship travels 55 km on a bearing of and then travels on a bearing of for 140 km. find the distance from the starting point to the ending point.
The distance from the starting point to the ending point is √(49225 - 15400 * cos(C))
To find the distance from the starting point to the ending point, we need to use the law of cosines.
Let's call the starting point A, the first endpoint B, and the second endpoint C. We can use the following formula:
d = √(AB² + BC² - 2 * AB * BC * cos(C))
where d is the distance from A to C, AB is the distance traveled on the first bearing, BC is the distance traveled on the second bearing, and C is the angle between the two bearings.
Given AB = 55 km and BC = 140 km, we can use the formula to calculate d:
d = √(55² + 140² - 2 * 55 * 140 * cos(C))
d = √(3025 + 19600 - 15400 * cos(C))
d = √(49225 - 15400 * cos(C))
Read more about Law of Cosines from:
https://brainly.com/question/28242853
g where 1. is the mass of the coffee (in si units, kg) 2. is the heat capacity of the coffee (in si units, j/(kg c) 3. is the temperature of the coffee (in si units, c) 4. is the temperature of the room (in si units, c) 5. is the heat transfer coefficient (in si units, w/(m2 c) 6. is the surface area of the cup (in si units, m2) 7. is time (in si units, s) if room temperature is 25 c and the coffee is originally at 80 c, how long will it take the coffee to cool to 30 c if the ratio ?
The precise answer will be determined by the precise quantities of mass, heat capacity, surface area, heat transfer coefficient, and the temperature differential between the coffee and the surrounding space.
We must take into account the heat transfer equation and the heat capacity equation in order to calculate how long it will take for a cup of coffee with a certain mass (1.), heat capacity (2.), and surface area (6.) to cool from an initial temperature of 80°C to 30°C in a room with a temperature of 25°C. We can calculate the approximate amount of time it will take for the coffee to cool by combining these two equations and solving for time (7.). The precise answer will, however, be determined by the precise quantities of mass, heat capacity, surface area, heat transfer coefficient, and the temperature differential between the coffee and the surrounding space.
learn more about mass here:
https://brainly.com/question/19694949
#SPJ4
"What is the estimated time it will take for a cup of coffee with a mass of (1.), heat capacity of (2.), and surface area of (6.), to cool from an initial temperature of 80°C to 30°C in a room with a temperature of 25°C, given the heat transfer coefficient of (5.)?"
the difference between speed and velocity involves?
Velocity is the pace and path of an item's movement, and speed is really the time rate where such an object is travelling along a route. The issue is that speed includes no maps application but velocity does.
How does velocity get its name?Thus, velocity is measured in metres per second, or m/s. The metric speed unit is the metre per s (m/s). A different way to describe velocity magnitude is in centimeters per second (cm/s).
Does velocity correspond to speed?Velocity is the pace and orientation of an item's movement, whereas pace is the forecasting which a thing is travelling along a route. In other words, velocity is a vector, whereas speed is a scalar number.
To know more about Velocity visit:
https://brainly.com/question/18084516
#SPJ4
The thermal energy of 0.700 mol of a substance is increased by 0.800 J. (A) What is the temperature change if the system is a monatomic gas?
If it's a monatomic gas system the difference in temperature is about 0.212 K.
What element has monatomic gases in it?Helium, neon, argon, krypton, radon, xenon, and neon are a few examples of monatomic gases (the noble gases).
The following equation can be used to determine the temperature change for a monatomic gas:
U is calculated using the formula U = (3/2) * n * R * T, where n is the number of moles, R is the gas constant, and T is the temperature.
To solve for T, rewrite the problem as follows:
T = (2/3) * U / (n * R)
We may now change the values provided:
T = (0.700 mol * 8.31 J/mol K) * (2/3) * 0.800 J
T = 0.212 K
Thus, the difference in temperature is almost 0.212 K.
To know more about Monatomic Gas visit:
https://brainly.com/question/14104743
#SPJ4
Red tape is used to fix a broke tailght in one to two sentences explain how different colors of light are transmitted reflected and absorbed by this kind of tape 2point
The colors can be able to pass through if they have the same wavelength while the rest are absorbed.
How are colors transmitted through a material?Colors are transmitted through a material by the selective absorption, reflection, and transmission of light. Different colors of light have different wavelengths and frequencies, and different materials interact with light in different ways.
Some materials, such as a prism, can split light into its component colors, while others, such as a colored filter, can absorb certain colors and allow others to pass through.
Learn more about color transmission:https://brainly.com/question/28447868
#SPJ1
somewhere in the universe an object is moving in a slow arcing turn without changing its speed. from just this information, what can we say about the net force on that object?
s traveling through the cosmos at a leisurely arc without altering its speed. Based only on this knowledge,
What does the word "cosmos" mean?
The term "cosmos" suggests that one sees the world as a sophisticated and well-organized system or entity. Cosmology is a vast field that studies the cosmos and our knowledge of the causes of its existence and significance. It also covers scientific, theological, and philosophical elements of the cosmos and its origin.
How does Cosmos provide?
Cosmos offers a superb selection of transportation options for a memorable trip, including spectacular train journeys, dramatic cable car ascents, night cruise ships, picturesque day ferries, and private first-class motorcoaches (the majority with free Wi-Fi). Our packages include scenic highlights and guided sightseeing that showcase your destination's greatest features.
To know more about Cosmos visit:
https://brainly.com/question/3035821
#SPJ4
What is the wavelength of a wave if it has a speed of 10 meters/second and a frequency of 2 hertz
Important Formulas:
[tex]v=\lambda f[/tex]
velocity(measured in m/s) = wavelength(measured in meters) * frequency(measured in hertz)
__________________________________________________________
Given:
[tex]v=10m/s[/tex]
[tex]f=2Hz[/tex]
[tex]\lambda=?[/tex]
__________________________________________________________
Rearranging formula for velocity to make wavelength the subject:
[tex]v=\lambda f[/tex]
[tex]\dfrac{v}{f} =\dfrac{\lambda f}{f}[/tex]
[tex]\lambda=\dfrac{v}{f}[/tex]
__________________________________________________________
Finding wavelength:
[tex]\lambda=\dfrac{v}{f}[/tex]
[tex]\lambda=\dfrac{10}{2}[/tex]
__________________________________________________________
Answer:
[tex]\boxed{\lambda=5 \texttt{ meters}}[/tex]
you have two organ pipes, one open and one stopped. which harmonic (if any) of the stopped pipe has the same frequency as the third harmonic of the open pipe if the stopped pipe length is 16 that of the open pipe?
The 96th harmonic of the stopped pipe has the same frequency as the third harmonic of the open pipe.
The frequency of a harmonic in an organ pipe depends on the length of the pipe, the type of end (open or stopped), and the harmonic number.
For an open pipe, the frequency of the nth harmonic is given by:
f_n = n * v / 2L
where n is the harmonic number, v is the speed of sound in the medium (air), and L is the length of the pipe.
For a stopped pipe, the frequency of the nth harmonic is given by:
f_n = n * v / 4L
where n is the harmonic number, v is the speed of sound in the medium (air), and L is the length of the pipe.
Given that the stopped pipe has a length of 16 times shorter than the open pipe, we can write:
L_stopped = L_open / 16
Comparing the frequency of the third harmonic of the open pipe with the frequency of some harmonic of the stopped pipe:
f_3,open = 3 * v / 2L_open = f_n,stopped = n * v / 4L_stopped
Solving for n, we get:
n = (3 * 2L_open) / (4 * L_stopped) = 3 * 2 * 16 = 96
A harmonic number is a mathematical concept that appears in various areas of mathematics, including number theory and calculus. It is defined as the sum of the reciprocals of the positive integers up to a given positive integer. For example, the first few harmonic numbers are 1, 1.5, 1.833, 2, 2.083, 2.166, etc.
In mathematical notation, the nth harmonic number can be expressed as the sum of the reciprocals of the first n positive integers:
H_n = 1 + 1/2 + 1/3 + 1/4 + ... + 1/n
Harmonic numbers have various properties and applications in mathematics and physics. For example, they are used to approximate the logarithm function, to study the distribution of primes, and to model various physical phenomena, such as the behavior of fluids in porous media.
To learn more about Harmonic number visit here:
brainly.com/question/29993185
#SPJ4
a train enters a curved horizontal section of track at a speed of 100 km/h and slows down with constant deceleration to 50 km/h in 12 s. an accelerometer mounted inside the train records a horizontal acceleration of 2 m/s2 when the train is 6 s into the curve. calculate the radius of curvature of the track for this instant.
The radius of curvature of the track at the instant the train is 6s into the curve and experiences a horizontal acceleration of 2 m/s2 is 266m.
To calculate the radius of curvature, we need to consider the relationship between the horizontal acceleration, velocity, and radius. The formula for centripetal acceleration is given as a = v^2/r, where a is the horizontal acceleration, v is the velocity, and r is the radius of curvature.
Since the train slows down with constant deceleration from 100 km/h to 50 km/h in 12s, we can calculate the average velocity for the 6s time frame, which is (100 + 50)/2 = 75 km/h.
Converting this to m/s, we get 75 km/h = 20.83 m/s. Plugging this into the formula, we have
a = 20.83^2/r, or r = 20.83^2/aWhere a is the horizontal acceleration of 2 m/s2. Solving for r, we get:
r = 20.83^2/2 r = 266 mThis is the radius of curvature of the track at the instant the train is 6s into the curve and experiences a horizontal acceleration of 2 m/s2.
Learn more about radius of curvature here: brainly.com/question/15143239
#SPJ4
if we triple the number of moles in the gas vessel at constant pressure, what would the new volume be?
The new volume would be tripled if we tripled the amount of moles in the gas vessel while maintaining a fixed pressure.
What is moles?They frequently take the form of tiny, dark brown spots and are brought on by clumps of pigment-forming cells (melanocytes). The majority of people have between 10 and 40 moles, which usually form during adolescence and childhood and it may change or disappear over time. Melanocytes are the type of cells that make up moles. Our skin contains several melanocytes, which are the cells responsible for producing the pigment melanin, which causes our skin to tan. Numerous clustered melanocyte cells make up a mole.
Why moles should be removed?Most moles do not need to be treated. However, if you don't like the way a mole looks or feels, you might wish to have it removed. If you have any concerns about a mole, consult your doctor. Moles are typically removed if your doctor thinks they could be malignant or for aesthetic purposes. The term "mole" on your skin can also refer to a nevus, or "beauty mark." The majority of moles are benign, and they are extremely frequent. They should not bleed, hurt, or itch, and they are not contagious. The lifespan of a mole can reach 50 years.
To know more about Moles visit:
https://brainly.com/question/21323029
#SPJ4
two small spheres separated 3.13 m apart have equal positive charge. the electric force between them is 4.57e-2 n. what is the amount of charge on one sphere (in coulombs)?
Two small spheres separated 3.13 m apart have equal positive charge. the electric force between them is 4.57e-2 n. The amount of charge on one sphere is approximately 1.72 x 10^-9 C.
The electric force between two charged spheres can be calculated using Coulomb's law:
F = k * Q1 * Q2 / d^2
Where,
F = the electric force,
k = Coulomb's constant (8.99 x 10^9 N * m^2 / C^2),
Q1 and Q2 are the charges on the two spheres, and d is the distance between them.
Rearranging the equation and solving for one of the charges:
Q1 =[tex]\sqrt{ (F * d^2 / k)}[/tex] = [tex]\sqrt{(4.57e-2 N * (3.13 m)^2 / (8.99 x 10^9 N * m^2 / C^2))}[/tex] = 1.72 x 10^-9 C
So, the amount of charge on one sphere is approximately 1.72 x 10^-9 C.
Here you can learn more about Coulomb's law
brainly.com/question/29465608
#SPJ4
what force is responsible for the motion along the boundary between the nazca and south american plates?
B. Slab pull is force responsible for the motion along the boundary between the nazca and south american plates.
Slab Pull: What is it?A cold, solid oceanic plate that is being dragged into the mantle by its own weight is characterized as a slab. Based on the argument, the oceanic plate sinks into the mantle because it has a greater density than the hotter mantle underneath it.
What kind of plate barrier exists between the South American Plate and the Nazca Plate?Examples of ocean-continent convergent borders also include subduction of the Juan de Fuca Plate under North America and the subduction of the Nazca Plate under South America, which led to the formation of the Andes Mountains and the Peru Trench (creating the Cascade Range).
Learn more about american plates here:
brainly.com/question/29633157
#SPJ4
what force is responsible for the motion along the boundary between the nazca and south american plates?
A) Ridge push
B) Slab pull
C) Rising hot mantle
5. The temperature of air in a foundry increases when molten metals cool and solidify. Suppose 4.5 x 10^7 J energy is added to the surrounding air by the solidifying metal. The air's temperature increases by 55°C and the air has a specific heat capacity of 1.0 × 10 J/kg °C. What is the mass of the heated air?
The mass of the heated air is 2475000 kg.
What is specific heat capacity?The heat capacity of a sample of a substance is equal to the mass of the sample divided by the specific heat capacity of the substance (symbol c) in thermodynamics.
Informally, it is the quantity of heat that must be added to one unit of a substance's mass in order to raise its temperature by one unit.
The specific heat capacity of air = 1.0 × 10³ J/kg °C.
Hence, the mass of the heated air is =
( 4.5 x 10⁷ × 55) ÷ ( 1.0 × 10³ ) kg
= 2475000 kg.
Learn more about heat capacity here:
https://brainly.com/question/28302909
#SPJ1
what is the speed of car a at the start of the sliding motion, in the instant just after the collision?
(a) The magnitude of the deceleration of each of the cars is a=f/m=μk mg/m=μkg. If a car stop in distance d , then its speed ν just after impact is obtained from Eq. 2−16 :
Since ν0=0 (this could alternatively have been derived using Eq. 8−31 ). Thus,
νA= [tex]\sqrt2μkgdA[/tex] = [tex]\sqrt2(0.13)(9.8m/s 2 )(8.2m)[/tex] =4.6m/s .
(b) Similarly , νB= [tex]\sqrt2μkgdB[/tex]= [tex]\sqrt(2(0.13)(9.8m/s2)(8.2m))[/tex] =4.6m/s .
(c) Let the speed of car B be ν just before the impact. Conservation of linear momentum gives
mB ν=mA νA + mB νB, or
ν= [tex]\frac{(mA νA + mB νB)}{mB}[/tex]= [tex]\frac{(1100)(4.6)+(1400)(3.9)}{1400}[/tex]=7.5m/s
Linear momentum, also known as momentum, is a vector quantity that describes the motion of an object. It is defined as the product of an object's mass and its velocity. The unit of momentum is kilogram meter per second (kg m/s). Linear momentum is a conserved quantity, meaning that the total momentum of a system of objects remains constant if no external forces act upon it. This principle is known as the law of conservation of momentum and it is a fundamental concept in classical mechanics.
The momentum of an object can be changed by applying a force on it, causing the object to accelerate. The greater the mass of an object and the faster it is moving, the greater its momentum. Understanding linear momentum is important in various fields including physics, engineering, and sports, where it is used to analyze the motion of objects and predict the outcome of collisions.
To learn more about Linear momentum visit here:
brainly.com/question/27988315
#SPJ4
Complete Question: -
In the before part of Fig. 9-60, car A (mass 1100kg ) is stopped at a traffic light when it is rear-ended by car B (mass 1400kg ). Both cars then slide with locked wheels until the frictional force from the slick road (with a low μ k of 0.13) stops them, at distances dA = 8.2m and dB = 6.1m. What are the speeds of (a) car A and (b) car B at the start of the sliding, just after the collision? (c) Assuming that linear momentum is conserved during the collision, find the speed of car B just before the collision.
in the hydraulic system shown at right, the piston on the left has a diameter of 4.4 cm and a mass of 1.8 kg. the piston on the right has a diameter of 12 cm and a mass of 3.2 kg. if the density of the fluid is 750 kg/m3 , what is the height difference h between the two pistons if they are free to move so that the system is in equilibrium? explain/show your work
in the hydraulic weighs 1.80 kg, whereas the right piston weighs 3.20 kg. The diameters pistons are 4.40 cm and 12.0 cm, respectively. As a result, there is an 8.60 cm height difference between the two pistons.
What impact be doing the sizes of the pistons in a hydraulic circuit have on the pressure?Each inch of the huge piston's 10 square inch surface is subjected to an equal distribution of pressure. As a result, a 10-pound weight is raised by the larger piston. The mechanical advantage and amount of weight that the second piston can raise increases with the second piston's cross-sectional area.
How can the height differences between two pistons be determined?determining the height The diameter difference is 0.0355 cm. The height difference can be calculated by multiplying this number by the fluid's density, which is 740 kg/m3. We now have a measurement of 0.0885 cm.
To know more about hydraulic visit :
https://brainly.com/question/20876092
#SPJ4
what would the radius (in mm) of the earth have to be in order for the escape speed of the earth to equal the speed of light (300000000 m/s)? you may ignore all other gravitational interactions for the rocket and assume that the earth-rocket system is isolated.
Answer:
The escape speed from a spherical object can be calculated as v_esc = √(2GM/R), where G is the gravitational constant, M is the mass of the object, and R is the radius.
Setting v_esc = c, the speed of light, and solving for R:
R = GM/c^2 = (6.67 x 10^-11 m^3 kg^-1 s^-2)(5.97 x 10^24 kg)/(3 x 10^8 m/s)^2
R = 1.20 x 10^8 m = 1,200,000,000 mm
So the radius of the Earth would need to be approximately 1,200,000,000 millimeters (or 1.2 x 10^8 meters) for its escape speed to equal the speed of light.
losego a copper wire that is 3.14 m long with a diameter of 2 cm has an electrical resistance of 10 ohms. if this wire is cut exactly in half (equal lengths), what is the electrical resistance of each wire piece?
The copper wire is 3.14 m long with diameter of 2 cm has an electrical resistance of 10 ohms. If the wire is cut exactly in half in equal lengths, the electrical resistance of each wire piece is 20 ohms.
The length of the copper wire = 3.14 m
The diameter of the copper wire = 2 cm
The electrical resistance = 10 ohms
The wire is cut exactly in half in equal lengths, the electrical resistance expression is as follows :
R = ρ L / A
R = 10 ohms × 2
R = 20 ohms
Thus, the electrical resistance of each wire piece is 20 ohms.
To learn more about electrical resistance here
https://brainly.com/question/30471317
#SPJ4
what are the functions of an enzyme? select all that apply.
a. To lower the activation energy for the reaction
b. To increase the of a specific reaction
c. To allow a reaction to be reversible
d. To alter the equilibrium of a spesific reaction
e. To alter the delta G of a spesific reaction
f. To supply energy for an endergonic reaction
The stated purpose of the enzyme is to boost the speed of a certain process and decrease the overpotential for that reaction.
What are energy and its measure?Energy is the capability to accomplish labor. The amount of labor an organism's stored energy is capable of performing after it is expended. energy is a scalar quantity. The term "joule" refers to the SI unit of energy. The quantity of energy required to do one photon of activity is one joule.
What is the simplest definition of energy?Scientists refer to energy as the ability to work. Modernity is feasible because people have learned how to transfer information from one media to another and then use it to complete tasks.
To know more about Energy visit:
brainly.com/question/25959744
#SPJ4
A new kind of toy ball is advertised to "bounce perfectly elastically" off hard surfaces. A student suspects, however, that no collision can be perfectly elastic. The student hypothesizes that the collisions are very close to being perfectly elastic for low-speed collisions but that they deviate more and more from being perfectly elastic as the collision speed increases.(a) Design an experiment to test the student’s hypothesis about collisions of the ball with a hard surface. The student has equipment that would usually be found in a school physics laboratory.
The student can perform the following experiment: Measure the height of a table from the floor. Drop the ball from a known height and measure the height to which it bounces back. Repeat the process. Measure the speed of the ball just before it hits the surface. Plot the speed of the ball before and after. Compare the pre-collision and post-collision speeds of the ball.
What if the collisions are perfectly elastic?If the collisions are perfectly elastic, the pre-collision and post-collision speeds should be equal. However, if the hypothesis is correct, the deviation from being perfectly elastic should increase with collision speed.
What is elastic collision?An elastic collision is a type of collision in which the total energy of the two colliding objects remains constant.
To know more about collisions, visit here:
https://brainly.com/question/13138178
#SPJ4
a particle moves on a straight-line path that passes through the points (1,-3,5) and (5,1,3). find a vector-valued function for the path.
The vector-valued function of a particle travelling in a straight line between the coordinates (1,-3,5) and (5,1,3) is r(t) = (1 + 4t, -3 + 4t, 5 - 2t).
According to the question
The parametric equation of a line, which is given by: may be used to find the vector-valued function of a particle traveling along a straight line.
r(t) = r₀ + tv
where,
t is a scalar parameter
v is the path's direction vector
r₀ is a point on the path's position vector.
We may utilize the two locations on the route, (1,-3,5) and (5,1,3), to determine r0 and v:
r₀ = (1,-3,5) (1,-3,5)
v = (5,1,3) - (1,-3,5) = (4,4,-2) (4,4,-2)
Thus, the path's vector-valued function is as follows:
r(t) = (1,-3,5) + t(4,4,-2)
⇒ r(t) = (1 + 4t, -3 + 4t, 5 - 2t)
This is a line's parametric equation that crosses through the points (1, -3, 5) and (5,1,3).
To know more about vector-valued functions here:
https://brainly.com/question/28592957
#SPJ4
xheggan athlete swims the length l of a pool in a time t 1and makes the return trip to the starting position in a time t 2. if she is swimming initially in the positive x direction, determine her average velocity for:an athlete swims the length l of a pool in a time t 1and makes the return trip to the starting position in a time t 2. if she is swimming initially in the positive x direction, determine her average velocity for:
The average velocity of the swimmer is 2l / (t1 + t2).
The average velocity of an object is defined as the total displacement of the object divided by the total time it takes to cover that displacement. In this case,
the swimmer is swimming the length of the pool and returning to the starting position, so the total displacement is 2lthe length of the pool. The total time is the sum of the time it takes to swim to the end and back, which is t1 + t2.By substituting these values into the formula for average velocity, we get:
average velocity = 2l / (t1 + t2)
Key points:
Average velocity is calculated as the total displacement divided by the total time.The total displacement for the swimmer is 2l (the length of the pool).Total time is t1 + t2 (the time to swim to the end and back).Learn more about average velocity here:
https://brainly.com/question/29483294
#SPJ4
a dropped super ball bounces off the ground and comes back up with the same speed. true or false: the ball's velocity just before bouncing was the same as immediately after it bounced.
The statement "a dropped super ball bounces off the ground and comes back up with the same speed" is false because the speed decreases.
There will be a number of shifts, but the most significant shift will be in the momentum of the ball. It demonstrates an abrupt change in the velocity of the ball. Therefore, momentum is the answer.
whoever has the fastest overall average speed wins. This statement is not accurate since a super ball that is placed onto the ground will bounce off of the ground and come back up at the same speed. The velocity of the ball just before it bounced was the same as the velocity of the ball immediately after it bounced.
You can also learn about velocity from the following question:
https://brainly.com/question/18084516
#SPJ4
why are there holes in the prongs of electrical plugs
By doing this, the plug is kept from being yanked out of the socket by the cord's or plug's weight. Additionally, it enhances the connection between both the socket and the outlet.
Are holes required for electrical prongs?Plugs have holes that are used to hold them in place inside sockets. Historically, sockets contained bumps. The purpose of these bumps was to fit inside the perforations. It would have been quite simple to simply take the plug out of the connection if there weren't any bumps and holes.
Why do plugs not have holes?This stops the mass of the plug or wire from pulling the plug out of the socket. The contact between both the plug and the output is also improved. Additionally, the manufacturer may "factory seal" or "lockout" some electrical appliances by inserting a plastic tie across either or both of the prong holes.
To know more about plug visit;
https://brainly.com/question/21720398
#SPJ4
in which of the following situations is there observational evidence for significant interaction between two objects? how can you tell? (select all that apply.) a charged particle leaves a curving track in a particle detector. a communications satellite orbits the earth. a space probe travels at constant speed toward a distant star. a ball bounces off a wall with no change in speed. a baseball that was hit by a batter flies toward the outfield. incorrect: your answer is incorrect.
The space probe's speed (and direction) stay constant because the probe is nearly free of interactions.
An object may either be studied without using its internal structure or it doesn't have one. Each object's translational and/or rotational motion is altered as a result of an interaction between the two. An object's change in motion is determined by the sum of its interactions when many interactions are present (the net force). There are three fundamental interactions or forces in nature that we are aware of: the gravitational force, the electroweak force, and the strong force. Together, the electromagnetic force and the weak force make up the electroweak force.
These two electroweak force components are dominant at distinct scales and are therefore discussed individually. At various length scales, these fundamental interactions predominate, and all other known "forces" are expressions of one or the other. From the very small scale of molecules (micro and molecular machines and chemical reactions), to the motion of commonplace objects like cars and wind turbines, to the motion of tectonic plates, to the motion of objects and systems at the cosmological scale, the fundamental forces govern both the structure and motion of objects.
To know more about interactions click here:
https://brainly.com/question/12241466
#SPJ4
consider a scenario in which an object is placed on a ramp, as pictured below. the coordinate system for the problem has been chosen such that the x-direction points along the ramp and the y-direction points perpendicular to the ramp. as such, the force of gravity acting on the object (despite being vertically down) has both x- and y-components. components coordinate system three possible methods of finding the x-component of the force of gravity are pictured below. your task is to determine which method is correct, and what has gone wrong in the incorrect attempts. comp red1 is x-component of the force of gravity correctly identified in red?
Method 1 is the correct method for finding the x-component of the force of gravity in this scenario. In this method, the force of gravity is split into two components using vector addition - the parallel component along the x-axis, and the perpendicular component along the y-axis. The x-component can then be determined by multiplying the magnitude of the force of gravity (Fg) by the cosine of the angle theta, which is the angle between the x-axis and the force of gravity.
In Method 2, the x-component of the force of gravity is incorrectly identified as the y-component, as the y-axis is perpendicular to the x-axis.
In Method 3, the x-component of the force of gravity is incorrectly identified as the magnitude of the force of gravity, as this value is the total magnitude of the force, not just the x-component.
Learn more about force of gravity:
https://brainly.com/question/2537310
#SPJ4
what is the minimum stream velocity necessary to transport a quartz particle that is 0.1 centimeter in diameter in a stream?
Minimum stream velocity necessary to transport quartz particle that is 0.1 centimeter in diameter in a stream is : 5.0 cm/s.
What is velocity?Velocity is the directional speed of object in motion as indication of its rate of change in position as observed from particular frame of reference as measured by particular standard of time.
As, Q = V * A
given that the diameter of the particle = 0.1 cm
V is stream velocity , A is cross sectional area of stream and Q is stream flow
Given a particle with a diameter of 0.1 cm,
To determine the stream velocity we use a stadia rod to measure at least 5 meters down ( depth of stream ) three times and then take average value which will be used to determine cross sectional area of the stream but given that the width of the stream is not given the closet value to the stream velocity will be = 5.0 cm/s.
To know more about velocity, refer
https://brainly.com/question/24445340
#SPJ4
what is motion? a. when an object changes position relative to a reference point. b. when something is still and not moving
a. when an object changes position relative to a reference point is motion.
What is the science of a motion?In physics, motion is a relation of a body's position or orientation over time. Translation is characterized as movement along a line or a curve. Rotation is a motion that adjusts a body's orientation.
What starts and ends motion?Motion is impeded or halted by the force of friction. When two components rub into one another, they create friction, which is a resistance to motion (the sled and the snow, for instance). Even air friction happens. An object can move or accelerate, slow down or descend, cease, or change direction as a result of force.
Learn more about motion here:
brainly.com/question/29255792
#SPJ4